Ключевые слова: beam, building, caofeidian, chemical, color, crank, crude oil, development, drilling rigs, dusk, energy, environment, equipment, evening, exploration, extraction, facilities, framework, fuel, geology, hebei, industrial, jidong oilfield, machinery, mineral, mining, natural gas, oil, oil pump, petrochemical, platforms, production, pumping unit, rotation, silhouette, sky, sunset, swing, technology, tools,